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Published September 1, 1994 | public
Journal Article Open

Light-induced absorption in photorefractive strontium barium niobate


Sr0.59Bao.41Nb2O6 and Sro.75Bao.25Nb2O6 exhibit an intensity-dependent absorption in the visible spectral range. We perform pump (green)-probe (red) measurements and find variation as high as 0.45 cm-' in the absorption coefficient, which depends significantly on the polarization of the probe light beam. Our results indicate a nonexponential dark decay time of the induced absorption and suggest that the trapping potential of the shallow traps varies significantly from one trap to another (multiple isolated shallow traps).

Additional Information

© 1994 Optical Society of America Received February 10, 1994 This research was sponsored by the U.S. Army Research Projects Agency.


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